JJ
Not true.
Married couples receive their partner's pensions when they die. With people in civil partnerships, any pension contributions made before the CP Act became law are transferred to the surviving partner.
Also, whatever way you look at it, CPs are a bit of a fudge. Massive props to the last Labour administration for bringing them in, but effectively, they're a contract which lacks the weight of social acceptance that marriage has.
Straight people can say, "I got married last June".
Gay people (presently) can only say , "I entered into a civil partnership agreement last June".
That statement has all the romance of taking out an extended guarantee for a washing machine.
All the social constructs which surround a CP ceremony look like those carried out during weddings, but they're fake. From the best man's speech, to the first dance, honeymoon etc etc...these are all things appropriated from traditional weddings to make CP look like weddings.
But they are not.
You could argue that CPs are so similar to weddings, that the Same Sex Marriage Act isn't needed.
I would argue that CPs promote 'otherness'...a bit like segregated toilets in the US in the last century.